Truck scale with over-limit alarm device

Abstract

The utility model relates to the technical field of motor truck scales, in particular to a motor truck scale with an over-limit alarm device, which comprises a machine body, a cavity is arranged in the machine body, slopes are fixedly connected to two ends of the machine body, an alarm is fixedly connected to the outer wall of the machine body, two guide grooves distributed in a mirror image manner are arranged at the top ends of the slopes, and the alarm is arranged in the cavity. A base plate is fixedly connected to the inner side wall of the cavity, a plurality of gravity sensors are mounted at the bottom end of the inner wall of the base plate, a bearing plate is clamped to the inner side wall of the cavity, a brush is slidably connected to the top end of the machine body, a filter screen is arranged at the top end of the machine body, and a dust collection box is mounted below the filter screen. The motor is started to drive the brush to sweep dust on the bearing plate in the direction of the lead screw, the dust enters the dust collection box through the filter screen, the dust in the dust collection box is regularly cleaned through the handle, abrasion or corrosion to the bearing plate is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of weighbridges, in particular to a weighbridge with an over-limit alarm device. Background Art

[0002] Before the 1980s, weighbridges mainly adopted a pure mechanical structure based on the lever principle. Although this mechanical weighbridge could meet the basic weighing requirements, it had deficiencies in terms of accuracy, stability, etc. With the increasing maturity of high-precision weighing sensor technology, mechanical weighbridges have gradually been replaced by electronic weighbridges with high accuracy and good stability. Electronic weighbridges use the strain electrical measurement principle for weighing, greatly improving the accuracy and efficiency of weighing.

[0003] When a freight truck enters the carrier, under the action of the object's gravity, the gravity is transmitted to the weighing sensor through the carrier. The elastic body of the weighing sensor deforms, and the strain gauge bridge circuit attached to the elastic body loses balance, outputting an electrical signal proportional to the weight value. These electrical signals are amplified by a linear amplifier and then converted into digital signals through A / D conversion. The weight signal is processed by the microprocessor of the instrument and the weight data is directly displayed.

[0004] However, during long-term use, dust particles adhere to the surface of the load-bearing plate, changing its original flatness and smoothness. The dust accumulated over a long time may contain corrosive substances, such as acid rain residues, chemical substances in industrial dust, etc. After these substances come into contact with the surface of the load-bearing plate, they may gradually erode its surface material, resulting in surface wear, scratches, or even corrosion. This not only affects the appearance of the load-bearing plate but may also weaken its load-bearing capacity, shorten its service life, and the load-bearing plate is closely connected to the surrounding structures, such as fixed bolts and welding points. This complexity makes the disassembly process require careful planning, making it inconvenient to disassemble and replace the load-bearing plate and having low work efficiency. Summary of the Utility Model

[0005] The cleaning of the load-bearing plate is solved, the influence on the weighing result is avoided, the service life is improved, and the cumbersome disassembly of the load-bearing plate is solved, improving the work efficiency.

[0006] In view of the above problems of cleaning and disassembly, the present utility model is proposed.

[0007] To solve the above technical problems, the present utility model provides the following technical solutions: A weighbridge with an overlimit alarm device, including a body. A cavity is opened inside the body. Ramps are fixedly connected to both ends of the body. An alarm is fixedly connected to the outer wall of the body. Two mirror-image distribution guide grooves are opened at the top end of the ramp. A substrate is fixedly connected to the inner side wall of the cavity. A plurality of gravity sensors are installed at the bottom end of the inner wall of the substrate. A load-bearing plate is clamped to the inner side wall of the cavity. A brush is slidably connected to the top end of the body. A filter screen is opened at the top end of the body. A dust collection box is installed below the filter screen. Two mirror-image distribution telescopic cylinders are fixedly installed at one end of the substrate. A circular ring is installed at the top end of the load-bearing plate.

[0008] As a preferred solution of the weighbridge with an overlimit alarm device of the present utility model, wherein: A support plate is fixedly connected to one end of the outer wall of the body. A motor is fixedly installed at the top end of the support plate. The output end of the motor is fixedly connected to a lead screw. A circular groove for the outer wall of the lead screw to slide is opened at one end of the body. A cylinder is threadedly connected to the outer wall of the lead screw.

[0009] As a preferred solution of the weighbridge with an overlimit alarm device of the present utility model, wherein: Two mirror-image distribution connecting rods are fixedly connected to the outer wall of the cylinder. The top ends of the connecting rods are fixedly connected to support rods. The top ends of the two support rods are fixedly connected to a connecting plate. The bottom end of the connecting plate is fixedly connected to the top end of the brush.

[0010] As a preferred solution of the weighbridge with an overlimit alarm device of the present utility model, wherein: A dust collection pipe is opened at the bottom end of the filter screen. The bottom end of the dust collection pipe is fixedly connected to the top end of the dust collection box. A drawer is slidably connected to the bottom end of the inner wall of the dust collection box. A handle is fixedly connected to one end of the drawer.

[0011] As a preferred solution of the weighbridge with an overlimit alarm device of the present utility model, wherein: An installation groove for installing the telescopic cylinder is opened on the inner wall of the substrate. The output end of the telescopic cylinder is fixedly connected to a push rod. The output end of the push rod is fixedly connected to a push plate. A plurality of mirror-image distribution rectangular grooves are opened on both sides of the load-bearing plate.

[0012] As a preferred solution of the weighbridge with an overlimit alarm device of the present utility model, wherein: A trapezoidal block is slidably connected to the inner wall of the rectangular groove. A spring is connected between one end of the trapezoidal block and the bottom of the rectangular groove. A round block is fixedly connected to the top end of the load-bearing plate. A circular hole for the outer wall of the circular ring to be rotatably connected is opened on the outer wall of the round block.

[0013] The beneficial effects of the present utility model:

[0014] 1. The motor is started to drive the brush to clean the dust on the bearing plate along the direction of the lead screw. The dust enters the dust collection box through the filter screen. The dust in the dust collection box is regularly cleaned by using the handle, reducing the wear or corrosion of the bearing plate and improving the service life.

[0015] 2. By starting the telescopic cylinder, the clamping connection between the substrate and the bearing plate is cancelled. The bearing plate is pulled out from the inside of the substrate by the circular ring. The operation is convenient and easy to use, avoiding the use of more tools and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall sectional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the motor installation structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the brush installation structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the bearing plate installation structure of the present invention.

[0022] Figure 6 It is a schematic diagram of the dust collection box structure of the present invention.

[0023] Description of the reference numerals: 1, body; 2, bearing plate; 3, slope; 4, guide groove; 5, alarm; 6, motor; 7, round block; 8, circular ring; 9, gravity sensor; 10, substrate; 11, support plate; 12, lead screw; 13, cylinder; 14, connecting rod; 15, support rod; 16, connecting plate; 17, brush; 18, spring; 19, trapezoidal block; 20, telescopic cylinder; 21, push rod; 22, push plate; 23, filter screen; 24, dust collection pipe; 25, dust collection box; 26, drawer; 27, handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention with reference to the drawings of the specification. Embodiment 1

[0025] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 , for the first embodiment of the present utility model, a weighbridge with an over-limit alarm device is provided, including a body 1. A cavity is formed inside the body 1. Ramps 3 are fixedly connected to both ends of the body 1. An alarm 5 is fixedly connected to the outer wall of the body 1. Two mirror-symmetrically distributed guiding grooves 4 are formed at the top ends of the ramps 3, and the guiding grooves 4 are used to guide vehicles onto a load-bearing plate 2. A substrate 10 is fixedly connected to the inner side wall of the cavity. The cross-section of the substrate 10 is in a "U" shape. A plurality of gravity sensors 9 are installed at the bottom end of the inner wall of the substrate 10. The gravity sensors 9 are movably connected to the bottom end of the load-bearing plate 2, and the gravity sensors 9 are used to collect data and transmit it to a central processing system. The load-bearing plate 2 is snap-connected to the inner side wall of the cavity, and the load-bearing plate 2 is used to weigh trucks. A brush 17 is slidably connected to the top end of the body 1, and the brush 17 is used to clean the surface of the load-bearing plate 2. A filter screen 23 is formed at the top end of the body 1, and the filter screen 23 is used to prevent large foreign objects from entering a dust collection box 25. A dust collection box 25 is installed below the filter screen 23, and the dust collection box 25 is used to collect dust. Two mirror-symmetrically distributed telescopic cylinders 20 are fixedly installed at one end of the substrate 10, and the telescopic cylinders 20 are used to push a trapezoidal block 19 to retract. A circular ring 8 is installed at the top end of the load-bearing plate 2, and the circular ring 8 is used to pull the load-bearing plate 2.

[0026] One end of the outer wall of the body 1 is fixedly connected to a support plate 11, and the support plate 11 is used to support a motor 6. A motor 6 is fixedly installed at the top end of the support plate 11, and the motor 6 is used to drive a connecting rod 14 to move. The output end of the motor 6 is fixedly connected to a lead screw 12. One end of the lead screw 12 is slidably connected to the inner side wall of the cavity. A circular groove for facilitating the sliding of the outer wall of the lead screw 12 is formed at one end of the body 1. A cylinder 13 is threadedly connected to the outer wall of the lead screw 12.

[0027] Two mirror-symmetrically distributed connecting rods 14 are fixedly connected to the outer wall of the cylinder 13, and the connecting rods 14 are used to drive a support rod 15. The top end of the connecting rod 14 is fixedly connected to the support rod 15, and the support rod 15 is used to drive a connecting plate 16 to move. The top ends of the two support rods 15 are fixedly connected to the connecting plate 16, and the connecting plate 16 is used to drive the brush 17 to move. The bottom end of the connecting plate 16 is fixedly connected to the top end of the brush 17.

[0028] A dust collection pipe 24 is formed at the bottom end of the filter screen 23, and the dust collection pipe 24 is used to convey dust to the dust collection box 25. The bottom end of the dust collection pipe 24 is fixedly connected to the top end of the dust collection box 25. A drawer 26 is slidably connected to the bottom end of the inner wall of the dust collection box 25, and the drawer 26 is used to drive the dust to be drawn out of the dust collection box 25. A handle 27 is fixedly connected to one end of the drawer 26.

[0029] During use, when the vehicle drives towards the load-bearing plate 2 through the guiding groove 4, the sensor will immediately collect data and transmit this data to the central processing system by wired or wireless means. The central processing system will compare the received vehicle weight data with the preset overweight standard. Once it is found that the vehicle weight exceeds the preset standard, the system will immediately determine that the vehicle is an overweight vehicle, and the alarm 5 will immediately emit an alarm sound. After weighing, the vehicle leaves along the guiding groove 4. Then, the motor 6 is started. The motor 6 drives the lead screw 12 to rotate. The lead screw 12 drives the connecting rod 14 to move along the lead screw 12 through the cylinder 13. The connecting rod 14 drives the support rod 15 to move. The support rod 15 drives the brush 17 to move through the connecting plate 16. When the brush 17 passes over the load-bearing plate 2, it drives the dust and foreign objects on the surface. The dust enters the dust collecting pipe 24 through the filter screen 23, and the foreign objects are blocked on the surface of the filter screen 23. The dust enters the dust collecting box 25 through the dust collecting pipe 24 and finally falls into the drawer 26. The dust is cleaned regularly by pulling the handle 27 to drive the drawer 26. Embodiment 2

[0030] Referring to Figure 1 、 Figure 2 and Figure 5 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: an installation groove for facilitating the installation of the telescopic cylinder 20 is provided on the inner wall of the substrate 10. The output end of the telescopic cylinder 20 is fixedly connected with a push rod 21. The push rod 21 is used to push the push plate 22. The output end of the push rod 21 is fixedly connected with a push plate 22. The push plate 22 is used to push the trapezoidal block 19. A plurality of mirror-image distributed rectangular grooves are provided on both sides of the load-bearing plate 2.

[0031] The inner wall of the rectangular groove is slidably connected with a trapezoidal block 19. The inclined surface of the trapezoidal block 19 faces downward, and the trapezoidal block 19 is used to clamp the load-bearing plate 2. One end of the trapezoidal block 19 is connected with a spring 18 between the bottom of the rectangular groove. The spring 18 is used to push the trapezoidal block 19 to be clamped with the substrate 10. The top end of the load-bearing plate 2 is fixedly connected with a round block 7. A circular hole for facilitating the rotation connection of the outer wall of the ring 8 is provided on the outer wall of the round block 7.

[0032] During use, when the load-bearing plate 2 needs to be repaired or replaced, it is necessary to remove the wires and start the telescopic cylinder 20. The push rod 21 carried by the telescopic cylinder 20 moves, and the push rod 21 pushes the push plate 22. When the push plate 22 contacts the inclined surface of the trapezoidal block 19, the trapezoidal block 19 is forced to move along the direction of the rectangular groove. At the same time, the spring 18 is stressed, and the trapezoidal block 19 retracts into the rectangular groove, pulling the ring 8. The ring 8 drives the load-bearing plate 2 to separate from the base plate 10. At the same time, the spring 18 is released to push the trapezoidal block 19 to reset. The telescopic cylinder 20 drives the push plate 22 to reset through the push rod 21. When installing, align the load-bearing plate 2 with the base plate 10 and put it in. When the trapezoidal block 19 contacts the top of the body 1, the trapezoidal block 19 is forced to retract, and the spring 18 is stressed. After passing through the body 1, the spring is forced to release to push the trapezoidal block 19 to pop out and engage with the base plate 10. The operation is now completed.

[0033] The remaining structures are the same as those of Example 1.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A weighbridge with an overrun alarm device, comprising a body (1). A cavity is formed inside the body (1). Ramps (3) are fixedly connected to both ends of the body (1). An alarm (5) is fixedly connected to the outer wall of the body (1). Two mirror-image distribution guide grooves (4) are formed at the top of the ramp (3). It is characterized in that: The inner side wall of the cavity is fixedly connected with a substrate (10). A plurality of gravity sensors (9) are installed at the bottom end of the inner wall of the substrate (10). A load-bearing plate (2) is clamped to the inner side wall of the cavity. A brush (17) is slidably connected to the top of the body (1). A filter screen (23) is formed at the top of the body (1). A dust collection box (25) is installed below the filter screen (23). Two mirror-image distribution telescopic cylinders (20) are fixedly installed at one end of the substrate (10). A ring (8) is installed at the top of the load-bearing plate (2).

2. The weighbridge with an over-limit alarm device according to claim 1, characterized in that: A support plate (11) is fixedly connected to one end of the outer wall of the body (1). A motor (6) is fixedly installed at the top of the support plate (11). The output end of the motor (6) is fixedly connected with a lead screw (12). A circular groove facilitating the sliding of the outer wall of the lead screw (12) is formed at one end of the body (1). A cylinder (13) is threadedly connected to the outer wall of the lead screw (12).

3. The weighbridge with an overrun alarm device according to claim 2, wherein: Two mirror-image distribution connecting rods (14) are fixedly connected to the outer wall of the cylinder (13). A support rod (15) is fixedly connected to the top of the connecting rod (14). The top ends of the two support rods (15) are fixedly connected with a connecting plate (16). The bottom end of the connecting plate (16) is fixedly connected with the top of the brush (17).

4. The weighbridge with an overrun alarm device according to claim 1, characterized in that: A dust collection pipe (24) is formed at the bottom end of the filter screen (23). The bottom end of the dust collection pipe (24) is fixedly connected with the top of the dust collection box (25). A drawer (26) is slidably connected to the bottom end of the inner wall of the dust collection box (25). A handle (27) is fixedly connected to one end of the drawer (26).

5. A weighbridge with an overlimit alarm device according to claim 1, characterized in that: An installation groove facilitating the installation of the telescopic cylinder (20) is formed in the inner wall of the substrate (10). The output end of the telescopic cylinder (20) is fixedly connected with a push rod (21). The output end of the push rod (21) is fixedly connected with a push plate (22). A plurality of mirror-image distribution rectangular grooves are formed on both sides of the load-bearing plate (2).

6. The weighbridge with an overrun alarm device according to claim 5, characterized in that: A trapezoidal block (19) is slidably connected to the inner wall of the rectangular groove. A spring (18) is connected between one end of the trapezoidal block (19) and the bottom of the rectangular groove. A round block (7) is fixedly connected to the top of the load-bearing plate (2). A circular hole facilitating the rotational connection of the outer wall of the ring (8) is formed in the outer wall of the round block (7).

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